Valve.



, C. W. JONES & J. A.. GIBsoN.

VALVE.

APPLICATION FILED APE. 2l, 1909.

. Patented July 5,1910.

Y plane extending its upper wall 5 the casing 1 UNITED sTATEs ATENT E@N,

CHARLES W. JONES AND JAMES A. GIBSON, 0F URBANA, ILLINOIS.

VALVE.

Specification of Letters Patent.

Patented July 5, 1910.

Application filed April 21, 1909. Serial No. 491,401.

To all whom it may concern:

Be it known that we, CHARLES W. JONES and JAMES A. GIBSON, citizens ofthe United States, residing at Urbana, in the county of Champaign andState of Illinois, have invented new and useful Improvements in Valves,of which the following is a specication.

Our invention relates to improvements in check and stop valves for steamboilers.

The primary object of the invention is the provision of a valve of thischaracter wherein the check valve and its seat may be readily andquickly removed when necessary to repair or replace the same.

A further object of the invention is the provision of a valve of theabove stated character wherein the movement of the check valve may beregulated and varied.

A further object of the invention is the provision of a valve of theabove stated character wherein the movements of the check valve shall benoiseless.

A still further object of the invention is the provision of a valve ofthe above stated character which shall comprise comparatively few parts,whiclrshall be simple, durable and eiiicient in construction, and whichmay be manufactured and sold at a comparatively low cost.

With the above and other objects in view the invention consists in theconstruction, combination and arrangement of parts hereinafter fullydescribed and claimed, and illustrated in the accompanying drawing,wherein Figure 1 is a sectional View taken on a vertically and centrallythrough a check and stop valve constructed in accordance with ourinvention, and Fig. 2 is a sectional view taken on the horizontal planeindicated by the line 2-2 of Fig. 1.

Referring to the drawing `by reference numerals, l'designates a casingprovided at its outlet with a coupling extension 2 and at its inlet witha depending extension 3, the depending extension being provided in itsinner surface with screw threads 4. In is provided with an opening whichis surrounded by a neck 6 extending above and below the wall.

' end fully the enlarged The inner surface of the neck 6 is screw'-threaded as at 7, and the outer surface of the outer portion of the neckis screwthreaded as at 8. The stem 9 of a hollow cylindrical stop valve10, which has its lower open and its upper end fully closed, hasthreaded engagement with the threads 7 of the neck 6, and a bonnet 11has threaded engagement with the threads 8 of the neck. The stem 9projects above the bonnet 11 andis provided with `a hand wheel 12. Apassage 13 extends through the stem 9 and at a point adjacent its innerend is provided with screw-threads 14. In its upper end the stem 9 isprovided with a recess 15 having .its vertical Wall 16 screw# threaded.A bolt 17 has threaded engagement with the threaded portion 14 of thepassage 13 and is greater in length than the stem 9. At its upper endthe bolt 17 is provided with a hand wheel 18. A packing nut 19 ismounted in the recess 15 of the stem 9 and encircles the bolt 17,said-nut having threaded engagement with the vertical wall 16 of saidrecess. The lower edge of the stop valve l0 is beveled as at 20, saidedge being adapted to engage a beveled seat 21, formed on the upper edgeof an annular member 22 which has threaded engagement with the threads 4'of the casing extension 3. The seat member 22 is provided with anenlarged portion 23 which provides a shoulder 24 engaging the outer edgeof the extension.

- A solid cylindrical check valve 25 is slidably mounted within the stopvalve 10 and 1s adapted to engage a seat 26 formed on the upper edge ofan annular member' 27. Theseat member 27 is provided near its lower endwith a horizontally disposed flange 28 which engages the under side ofport-ion 23 of the seat member 22. A union nut 29 engages a shoulder 30formed on the enlarged portion 23 of the seat member 22 and has threadedengagement with a coupling 31, the upper edge of the coupling engagingthe ange 28 of the seat member 27. Pasages 32 extend longitudinally ofand open out through the upper end of the check valve 25, and ports 33extend from the side of the check valve to As the check valve 25 and theseat the passages. In its upper side the check valve 25 is provided witha recess 34 adapted to receive the inner endy of the bolt 17. .t

After the valve has been applied, the stop valve 10 ,is unseated. Thediameter of the lower ortion of the check valve 25 is smaller than theinner diameter of the stop valve 10, whereby to establish communicationbe-` tween the ports 33 andthe interior of the casing when the stopvalve is unseated. When the check valve 25 is seated the ports 33 arelocated below the stop valve 10. The water which remains between theupper end of the check valve 25 and the closed end of the stop valve 10forms a cushion which renders the movement of the check valve noiseless.and its movements varied through the movements of the bolt 17.

When it is desired to remove the seat member 27 and the check valve 25the stop valve 10 is seated. 'y After the stop valve 10 has been seatedthe union nut 29 is turned out of engagement with the coupling 31,permittin the seat mem er 27, and the check valve 29. member 27 mayberemoved either one or both may be readily and quickly repaired or relaced. The seat member l22 may also be quick y and readily removed.After the removal of the seat member 22, to remove the stop valve 10 itis only necessary to remove the hand wheels 12 and 18.

It should be ap scription, 'taken 1n connection with the accompanyingdrawing, that we provide a check valve for steam boilers wherein theparts may be readily and quickly removed when it 1s desired to repair orreplace the same, one which is simple, durable and eiiicient ofconstruction, and one whichmay be manufactured and sold atacomparatively low cost. t

While we have described the method of operation of the invention',together with the apparatus which we now consider to-be thebestembodiment thereof, we desire to have it understood that the apparatusshown is merely illustrative and that such changes may be made whendesired as are within the scope of the claims.

aving thus described the invention, what is claimed as new is 1 1. Avalve of the character set forth comprising a casing having an inlet andan, outlet, a check valve mounted in the casing,'a Stop valve mounted'in the casing and slidably receiving the check valve, said-stopv valvelbeing provided with a stein having threaded engagement with the casmg,and

a bolt carriedA by the stem of the stop valve The check valve 25 may beseated' the removal of the coupling,

parent from the above deand means and adapted to be adjusted to vary themovement of the check valve.

2. A valve of thecharacter set forth comprising la casing having aninlet and an outlet, a seat member threadedly secured in the inlet ofthe casing, another seat member removablyV secured to said first-namedseat member, a check valve mounted in the casing, a stop valve mountedin the casing, and mefns by which vthe stop valve may be operate 3. Avalve of the character .set forth comprising a casing having an inletand an outlet, a seat member threadedly secured in the inlet of thecasing, another seat member arranged within the first-named seat member,.a couplinga union-nut engaging the first-named seat member and thecoupling, said nut securing the coupling and said second-named seatmember in applied position, a check valve mounted in the casing, a stopvalve mounted in the casing, and mezns by which the stop valve may beoperate 4. A combined check and stop valve comprising a casing having aninlet and an outlet, a hollow cylindrical stop valve mounted within thecasing, means by which the stop valve may be operated, and a cylindricalcheck valve movably mounted within the stop valve.

5. A combined checkand stop valve com-l prising a casing having an inletand an outlet, a hollow cylindrical stop valve mounted in the casing,means by which the stop valve may be operated, and a cylindrical checkvalve movably mounted in the stop valve, said check valve being providedwith passages opening out through the upper end thereof andcommunicating at theirlower ends with ports .opening out through theside of the check valve.

6. A combined check and stop valve comprising a casing let, a stop valvemounted in the casing, means by which the stop valve may be operated, acheck valve mounted in the casing, by which the movements of the checkvalve may be controlled, said last named means being carried by the stopvalve. 7. A combined check and stop valve comprising a casing having aninlet and an outlet, a hollow cylindrical sto valve mounted in thecasing and provide with a hollow stem extending through the. casing, acylindrical check valve rmovably mounted in the stop valve, of the stopvalve and ada ted to be adjusted to vary the movements o lthe checkvalve.

having an inlet and an out-l and a bolt mounted in the stem llO 8. Acombined check and stop valve com- Y prising a casing having an inletand an outlet, a hollow cylindrical stop valve in the casing having itsupper end fully closed and its lower end fully open, a cylindrical checkvalve movably mounted in the stop valve land having its lower portionsmaller than the inner diameter of the stop valve, said Check valvebeing provided with passages opening out. through the upper end thereofand communicating at their lower ends with ports opening out through thesmaller end of the Check valve, and means by which the 10 check valvemay be operated.

In testimony whereof we ailix our signatures in Vpresence of twowitnesses.

CHARLES W. JONES. l JAMES A. GIBSON. Witnesses:

CHAS. M. WEBBER, HOWARD F. ROBINE'IT.

